* @throws IOException
     */
    public jcifs.SID[] getGroupMemberSids ( String authorityServerName, CIFSContext tc, int flags ) throws IOException {
        if ( this.type != SID_TYPE_DOM_GRP && this.type != SID_TYPE_ALIAS )
            return new SID[0];

        return tc.getSIDResolver().getGroupMemberSids(tc, authorityServerName, getDomainSid(), getRid(), flags);
    }


    /**
     * @param context

        public rpc.policy_handle alias_handle;

        public SamrOpenAlias(rpc.policy_handle domain_handle,
                    int access_mask,
                    int rid,
                    rpc.policy_handle alias_handle) {
            this.domain_handle = domain_handle;
            this.access_mask = access_mask;
            this.rid = rid;
            this.alias_handle = alias_handle;
        }

			[out] uint32_t num_entries);

	[op(0x1b)]
	int SamrOpenAlias([in] policy_handle *domain_handle,
			[in] uint32_t access_mask,
			[in] uint32_t rid,
			[out] policy_handle *alias_handle);

	[op(0x21)]
	int SamrGetMembersInAlias([in] policy_handle *alias_handle,
			[out] LsarSidArray *sids);

	typedef [v1_enum] enum {
		SE_GROUP_MANDATORY          = 0x00000001,
		SE_GROUP_ENABLED_BY_DEFAULT = 0x00000002,

     */
    public static final int SID_TYPE_DOM_GRP = 2;

    /**
     * 
     */
    public static final int SID_TYPE_DOMAIN = 3;

    /**
     * 
     */
    public static final int SID_TYPE_ALIAS = 4;

    /**
     * 
     */
    public static final int SID_TYPE_WKN_GRP = 5;

    /**
     * 
     */
    public static final int SID_TYPE_DELETED = 6;

    /**
     * 
     */

            switch ( resp.sid_type ) {
            case jcifs.SID.SID_TYPE_USER:
            case jcifs.SID.SID_TYPE_DOM_GRP:
            case jcifs.SID.SID_TYPE_DOMAIN:
            case jcifs.SID.SID_TYPE_ALIAS:
            case jcifs.SID.SID_TYPE_WKN_GRP:
                rpc.unicode_string ustr = rpc.domains.domains[ resp.sid_index ].name;
                out.domainName = ( new UnicodeString(ustr, false) ).toString();

			[out] uint32_t num_entries);

	[op(0x1b)]
	int SamrOpenAlias([in] policy_handle *domain_handle,
			[in] uint32_t access_mask,
			[in] uint32_t rid,
			[out] policy_handle *alias_handle);

	[op(0x21)]
	int SamrGetMembersInAlias([in] policy_handle *alias_handle,
			[out] LsarSidArray *sids);

	typedef [v1_enum] enum {
		SE_GROUP_MANDATORY          = 0x00000001,
		SE_GROUP_ENABLED_BY_DEFAULT = 0x00000002,

    public static final int SID_TYPE_DOM_GRP = lsarpc.SID_NAME_DOM_GRP;
    public static final int SID_TYPE_DOMAIN  = lsarpc.SID_NAME_DOMAIN;
    public static final int SID_TYPE_ALIAS   = lsarpc.SID_NAME_ALIAS;
    public static final int SID_TYPE_WKN_GRP = lsarpc.SID_NAME_WKN_GRP;
    public static final int SID_TYPE_DELETED = lsarpc.SID_NAME_DELETED;
    public static final int SID_TYPE_INVALID = lsarpc.SID_NAME_INVALID;

        public int rid;
        public rpc.policy_handle alias_handle;


        public SamrOpenAlias ( rpc.policy_handle domain_handle, int access_mask, int rid, rpc.policy_handle alias_handle ) {
            this.domain_handle = domain_handle;
            this.access_mask = access_mask;
            this.rid = rid;
            this.alias_handle = alias_handle;
        }


        @Override

    public static final int NT_STATUS_INVALID_COMPUTER_NAME = 0xC0000122;
    public static final int NT_STATUS_PIPE_BROKEN = 0xC000014b;
    public static final int NT_STATUS_NO_SUCH_ALIAS = 0xC0000151;
    public static final int NT_STATUS_LOGON_TYPE_NOT_GRANTED = 0xC000015b;
    public static final int NT_STATUS_NO_TRUST_SAM_ACCOUNT = 0xC000018b;

    public static final int SID_NAME_USER = 1;
    public static final int SID_NAME_DOM_GRP = 2;
    public static final int SID_NAME_DOMAIN = 3;
    public static final int SID_NAME_ALIAS = 4;
    public static final int SID_NAME_WKN_GRP = 5;
    public static final int SID_NAME_DELETED = 6;
    public static final int SID_NAME_INVALID = 7;
    public static final int SID_NAME_UNKNOWN = 8;